Green (Sodium heparin)
Refrigerate if delay in delivery is >8 hours. Spin and freeze if delivery is > 24 hours. If sending specimen from outside CHOP, please send plasma on dry ice by overnight courier (Mon-Thurs only).
Monday - Friday
If looking for free homocysteine, place sample on ice. 2 Lithium heparin microtainers may be used for amino acid testing.Amino Acids detected:p-serine,taurine,p-ethanolamine,urea,aspartic acid, oh-proline, threonine, serine, asparagine, glutamate, glutamine, sarcosine, a-amino-adipic, proline, glycine, alanine, citrulline, a-amino butyric, valine, cystine, methionine, cystathionine, isoleucine, leucine, tyrosine, phenylalanine, b-alanine, b-amino isobutyric, homocystine, GABA, ethanolamine, ammonia, oh-lysine, ornitine, lysine,1-me-histidine, histidine, 3-me-histidine, anserine, carnosine, arginine.